Adjustable level



July 2s, .1931.v 0,. MARISCHAL 1,815,949

ADJUSTABLE L/EVEL Filed 'Aprili 13, 192s 30k surfaces I providel near onefend of base Vmais lsind 3 or 32g fffiPatentred July`28',fl93 1ef 7 g misera oir/LER MABISCHAL, on sr.l ning-'FRANCE Amus'iuusLiri.,EkerenY v Appiietqn inea Aprilia, '1928; serial no'. areavsa ana in rr-rance April 22,1927.

' My vrinvention relates to improvements in levels and ythe object of the invention is to A.provide means fory adjusting the tubes con-r Y rtaining the spirit or otherluid usedin order n ythat the level kmay be accurately calibrated n V,ina'simple-manner yeven though thejsup# i i vporting memberpforf the said tubes vshould j not hold -its shapea'nd thereby alter the position ofv the tubes.

i0 The accompanying figure isa 'view ofc-'my level' in front elevation.'V

- My level comprises a base memberQwith true surfacesV of either metal korV Woodas shown'at 1*. The -saidfbase membery is pro- 15 vided with ythe usualfopening 2 for! making 'the device as light lasv possible. "Nearithee center ofthe level'IV mount a metallicframe 's 4 kon astud 3 so 'that it may pivoty theref spring 9. Frame 4'is`pr'ovided Iwith an elon- Z5-gatedcup-shaped portion "10 in which yis l fdisposed'a levellingtube llrrof Ordinary 0011; struction. i n

The tube Vl1 is used forlevelling horizontal e n surfaces,rv y. .K ,A l .n y y In order to providefor'levellin'g vertical f Vl, a stud 3,on whichv is pivoted a collar'l ,benty ot sheet; metal of asingle piece.v The free `ends of collarfl,L are bent intheform 135' Tof overlapping arms 5'. r,Disposed ad]acent saidarms is a'iiXed bracket'S and extending l through vvsaid bracket and said arms is al ,l screwv6ifDisposed on'screw' 6between V-`bracket' 8, and armsr `isa springf9. y Thef ,41,0 collart is provided with' diametrically op- Y `vposite 'aperatures 10'/ engaging the ends of fa levellingtube 11"; f v

f From theforegoi g it will'be vobviousthat should the base member 1 become deformed 'A V45" and disturb the position(L of levelling 'tubes n y, 11` or 11 the saidjtubes mayhavetheirrpof Q sition readily adj usted and compensate. for '1, thek error by merely turningthey nuti? or 7 and'eausing theframe lor 4 to pivot about f i.Havingthusl described my invention what I; claim .as new and desireto secure by Letters rrPatent is: Y 5

l." In a levelhavinga. plurality of levelling formvof a ring atone endand anapertured armat tl'i'e other end, and including .means for holding a levelling tube in a position intermediate the two said ends, a levelling tube `carried by the said frame,v a stud engagingthe ring at one end of the said iiame and fixed to the said base, asciewextending through the arm at the endof the frame, a .v

nut Von the said screw 'abutting the said arm,y ra bracket fixed 'on said base having an aperture through which the screw passes tosupport the screw, a. spring mounted around' said screwbetween the said bracket and the?y 'm said arm, a second frame for carrying a level- I n 'ling tube, saidsecond frame being formedy f' from a single piece of metal in the shape of 'e a split ring having free ends, a stud engaging f ringiformed on said last mentioned split ringg: a stud fixed to the base and engaging in said ring,` e the free ends of the split ring beingy bent to form overlapping arms, a screw eX- e tending through said overlapping arms, a

nut on saidlscrew abutting said overlapping a arms, a bracket fixed to theA base having an aperture through which the screw passes to er support the screw, a spring for saidscrew mounted between the bracket and thesaid overlapping arms, there being means for cai i rying a levelling tubein said split ring trame,

and a levelling tube carried by said frame.k

y "2.` In ay level having a plurality of levelling"` tubes, a base member7 a frame for eacholil form of a ring at one end and an apertured.

"arm at theother end, with means for holding `ra levelling tube intermediate theftwo said'V 4 kends;V said meansincluding an elongated cup f y shaped portion, alevelling tube carried by fthesaid frame, a stud engagingthe'ring atv K one end Of the said traine and fixed to the said base, a screw yextending through the arm lO at the endofk the -frame'2 a' nutfonthe said 1 screw abutting the said arm, a bracket fixed Y on said base having an aperture through which the screw passes to support the screw, a spring mounted around said screw between the said bracket and the said arm, a second frame for carrying a ieveliingtube, said sec- 0nd frame being formed from a single piece ofmetal in the shape of a split ringhaving free ends, a stud engaging ring formedon said last mentioned split ring, a stud iXed to the base and engaging in said ring, the freev ends of the split ring being bent to form everlapping arms, a screw 'extending `thrrnlghr vsaid overlapping arms, a nut on said screw ,i abutting said' Overlapping arms, a bracket fixed to' the base having an aperturethrough Y which* the screw7 passes to; support the screw, a spring for said screw mountedbetWeen/th'e bracket and the said overlapping arms, there being dialnetrcally opposite apertures in said split ring frame for engaging the ends l of a 'levelling tube, and aleve'ilingtubecar-- ried by said frame. p Y Y Y.

v In testimony Vwhereof I ax my signature.

25 y A Y Y V,OMER MARISCHAL.

v2 v y1,815,949Y 

